American Water Heater BCL380T1996NOX Instruction Manual page 18

taBle 6. teChniCal data Venting
type B gas Vent
multiple gas fired tank-type heaters
When venting multiple tank type heaters using Type b vent
pipe, follow the installation diagram (figure 13) and tables
below which give sizing and data based upon nFPA 54/AnSI
Z223. 2006.
model BCl380t1996noX, BCl3100t1996noX
input: 199,000 Btu/hr
Vent connector size: 6 inches
number of heaters
2
3
4
input Btu/hr rise
199,000 1 ft.
199,000 2 ft.
199,000 3 ft.
Combined input
in thousands of
Btu/hr
398,000
597,000
796,000
total Vent height (feet)
6 8 10
Vent Connector diameter (inches)
7 7 7
7 7 6
6 6 6
manifold and Common Vent diameter (inches)
8 8 8
10 9 9
12 12 10
18
15 20 30 50
6 6 6 6
6 6 6 6
6 6 6 6
7 7 7 6
9 8 8 7
10 9 9 8
100
6
6
6
6
7
8